Function: Automatically monitor the vehicle's driving condition. The light intensity caused by the light source sensor is used to adjust the screen brightness. Free rotation is used and its sensitivity is high. Using high-resolution, high-definition color liquid crystal display Features and further details: Works for All Vehicles: Unlike other car HUDs, you don't have to worry about compatibly, X98 can work for all vehicles no matter which brand or which model worldwide X98 is based on GPS module inside. Powered by Solar: X98 HUD is equipped with a Solar Panel, it can charge automatically in the sun, and also can connect your device to car power supply via USB cable. Rich Content: Almost everything you may need to read while driving will be shown by this HUD , including vehicle speed, clock, voltage, altitude, km/h and mph, car ambient temperature and battery level, low voltage alarm, over speed alarm, fatigue alarm. A great driving partner.Mullifunction: X98 HUD has been updated with new functions that make it different and more competitive than the traditional HUD in the market. Because S98 is based on GPS module and satellite, so it can be used to read car information. A multi-functional tool to help you find out about your car. The device is a GPS digital speedometer, and all data is collected from satellites. So if tested at home, maybe the speed and time cannot be displayed correctly. Please test it on your car outdoors with good signal. Specification: Power: DC 10V ~ 30V Voltage accuracy: 0.5V Speed accuracy: less than 0.36 Km/h Error code: Synchronized vehicle data Color: Black Material: ABS Package include: 1 * Car HUD